During synchronization you may get a message indicating that the device is out of space.  If you check your device and see that sufficient space is available, you should try the synchronization step again.  Sometimes it may take more than one attempt.  (Use the "Synchronize" button on the main dialog of Pocket Genealogist on the desktop)  You don't need to do the "Create" or "Import" step, the sync process is smart enough to continue from the last good point.

This problem occurs most frequently when trying to synchronize to a storage card.  Even though you may have lots of free space on the card, you also need to have lots of free memory on the device in order for the synchronization to be successful.